You Install a New Jira Instance Using Only the Default

You install a new Jira instance using only the default configurations. A team approaches you to set up a project with the following specifications: There are four standard issue types and three sub-task issue types. The first sub-task will need a new screen for the Edit operation. The second sub-task will need new screens for both the Create and Edit operations. Everything else should use the default configurations. How many new Screen Schemes do you need to create?

A) 7
B) 4
C) 1
D) 3
E) 2